<template>
  <div>
    <!-- 三级分类 -->
    <Category :scene="scene"></Category>
    <el-card style="margin:10px 0px">
      <div v-show="scene == 0">
        <el-button :disabled="categoryStore.c3Id ? false : true" type="primary" size="default" icon="Plus"
          @click="addSpu">添加SPU</el-button>
        <!-- 展示已有SPU数据 -->
        <el-table style="margin: 10px 0px;" border :data="records">
          <el-table-column label="序号" type="index" align="center" width="80px"></el-table-column>
          <el-table-column label="SPU名称" prop="spuName"></el-table-column>
          <el-table-column label="SPU描述" prop="description" show-overflow-tooltip></el-table-column>
          <el-table-column label="SPU操作">
            <!-- row:即为已有的SPU对象 -->
            <template #="{ row, $index }">
              <el-button type="primary" size="small" icon="Plus" title="添加SKU" @click="addSku(row)"></el-button>
              <el-button type="warning" size="small" icon="Edit" title="修改SPU" @click="updateSpu(row)"></el-button>
              <el-button type="info" size="small" icon="Share" title="查看SKU列表" @click="findSku(row)"></el-button>
              <el-popconfirm :title="`你确定删除${row.spuName}?`" width="200px" @confirm="deleteSpu(row)">
                <template #reference>
                  <el-button type="danger" size="small" icon="Delete" title="删除SPU"></el-button>
                </template>
              </el-popconfirm>

            </template>
          </el-table-column>
        </el-table>
        <!-- 分页器 -->
        <el-pagination v-model:current-page="pageNo" v-model:page-size="pageSize" :page-sizes="[3, 5, 7, 9]"
          @current-change="getHasSpu" @size-change="changeSize" layout="prev, pager, next, jumper,->,sizes,total"
          :total="total" />
      </div>
      <!-- 添加SPU|修改SPU子组件 -->
      <SpuForm ref="spu" v-show="scene == 1" @changeScene="changeScene"></SpuForm>
      <!-- 添加SKU的子组件 -->
      <SkuForm ref="sku" v-show="scene == 2" @changeScene="changeScene"></SkuForm>
      <!-- dialog对话框:展示已有的SKU数据 -->
      <el-dialog v-model="show" title="SKU列表">
        <el-table border :data="skuArr">
          <el-table-column label="SKU名字" prop="skuName"></el-table-column>
          <el-table-column label="SKU价格" prop="price"></el-table-column>
          <el-table-column label="SKU重量" prop="weight"></el-table-column>
          <el-table-column label="SKU图片">
            <template #="{ row, $index }">
              <img :src="row.skuDefaultImg" style="width: 100px;height: 100px;">
            </template>
          </el-table-column>
        </el-table>
      </el-dialog>
    </el-card>
  </div>
</template>

<script lang='ts' setup>
import SpuForm from './skuForm.vue'
import SkuForm from './spuForm.vue'
import type { HasSpuResponseData, Records, SkuInfoData, SkuData } from '@/api/product/spu/type'
import { reactive, toRefs, ref, watch, onBeforeUnmount, onMounted } from 'vue'
//引入分类的仓库
import useCategoryStore from '@/store/modules/category';
let categoryStore = useCategoryStore();
import { reqHasSpu, reqSkuList, reqRemoveSpu } from '@/api/product/spu';
import type { SpuData } from '@/api/product/spu/type'
import { ElMessage } from 'element-plus';
//分页器默认页码
let pageNo = ref<number>(1);
//每一页展示几条数据
let pageSize = ref<number>(3);
//场景的数据
let scene = ref<number>(0); //0:显示已有SPU  1:添加或者修改已有SPU 2:添加SKU的结构
//存储已有的SPU的数据
let records = ref<Records>([]);
//存储已有SPU总个数
let total = ref<number>(0);
//获取子组件实例SpuForm
let spu = ref<any>();
//获取子组件实例SkuForm
let sku = ref<any>();
//存储全部的SKU数据
let skuArr = ref<SkuData[]>([]);
let show = ref<boolean>(false);
//监听三级分类ID变化
watch(() => categoryStore.c3Id, () => {
  //务必保证有三级分类ID
  if (!categoryStore.c3Id) return;
  getHasSpu();
})

//此方法执行:可以获取某一个三级分类下全部的已有的SPU
const getHasSpu = async (pager = 1) => {
  //修改当前页码
  pageNo.value = pager;
  let res: HasSpuResponseData = await reqHasSpu(pageNo.value, pageSize.value, categoryStore.c3Id);
  if (res.code == 200) {
    records.value = res.data.records;
    total.value = res.data.total;
  }
}

//分页器下拉的时候发生变化的时候触发
const changeSize = () => {
  getHasSpu()
}
//修改已有的SPU的按钮的回调
const updateSpu = (row: SpuData) => {
  //切换为场景1:添加与修改已有SPU结构->SpuForm
  scene.value = 2;
  //调用子组件实例方法获取完整已有的SPU的数据
  sku.value.initHasSpuData(row);
}

//添加SKU按钮的回调
const addSpu = () => {
  //点击添加SKU按钮切换场景为2
  scene.value = 2
  //调用子组件实例获取添加SPU的方法
  sku.value.initAddSpu(categoryStore.c3Id)
}

//子组件SpuForm绑定自定义事件:目前是让子组件通知父组件切换场景为0
const changeScene = (num: number) => {
  //子组件Spuform点击取消变为场景0:展示已有的SPU
  scene.value = num;
  getHasSpu()
}
//路由组件销毁的时候，把仓库分类相关的数据清空
onBeforeUnmount(() => {
  //清空仓库的数据
  categoryStore.$reset();
})

//添加SKU按钮的回调
const addSku = (row: SpuData) => {
  //点击添加SKU按钮切换场景为1
  scene.value = 1;
  //调用子组件的方法初始化添加SKU的数据
  spu.value.initSkuData(categoryStore.c1Id, categoryStore.c2Id, row);
}

//查看SKU列表的数据
const findSku = async (row: any) => {
  let res = await reqSkuList(row.id)
  if (res.code == 200) {
    skuArr.value = res.data;
    //对话框显示出来
    show.value = true;
  }
}

//删除已有的SPU按钮的回调
const deleteSpu = async (row: SpuData) => {
    let result: any = await reqRemoveSpu((row.id as number));
    if (result.code == 200) {
        ElMessage({
            type: 'success',
            message: '删除成功'
        });
        //获取剩余SPU数据
        getHasSpu(records.value.length > 1 ? pageNo.value : pageNo.value - 1)
    } else {
        ElMessage({
            type: 'error',
            message: '删除失败'
        })
    }
}

</script>

<style scoped lang="scss"></style>